Ontario Geological Survey
Permanent Link to this Record:
MDI41P10SW00013
| Record Name(s) | Juby - 1996, E. Anglehart - 1981 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1981-Jan-27 |
| Date Last Modified | 2023-Mar-20 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Tyrrell
Latitude: 47° 35' 53.07" Longitude: -80° 57' 50.7"
UTM Zone: 17 Easting: 502700 Northing: 5271630 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 41P10SW
Point Location Description: Deposit on map from Campbell, Sexton and Studd (2013), P.30
Location Method: Data Compilation
Access Description: South of Hwy 560, the Spear Lake Road passes within 200 m of the Juby Main Zone.
1931: Garvey did trenching about 350 m NE of the main zone. 1934: G. Welch discovered the eastern part of the Main zone. Property optioned by Provincial Development Syndicate. Trenching completed. 1938: Optioned to Teck-Hughs. Diamond drilled 17 holes totalling about 1900 m. 1939: Optioned to Hollinger Consolidated Gold Mines. Mag survey completed and a number of diamond drill holes. 1945: Siscoe Gold Mines resampled the trenches. Matachewan Consolidated Gold Mines trenched the Anglehart occurrence. 1968: Mag and EM surveys conducted by Decker and Juby. 1972: Mag and EM surveys by Anglehart and Juby. 1974: Getty Mines Limited completed geological mapping and soil geochemistry, IP and mag 1975: Getty drilled 12 holes totalling 1412 m. 1984: Pamour Porcupine Mines Ltd. drilled 10 holes totalling 611 m. 1996: Royal Oak Mines Ltd. completed stripping and assayed 107 samples. 1999: Property optioned by Inmet. Line cutting and IP/Resistivity. 2000: Inmet completed trenching and stripping. 22 drill holes totalling 8033 m. 2002-2008: Diamond drilling of 70 NQ surface drill holes by Temex totalling 15,126 metres. NI 43-101 compliant resource estimate. 2010-2011: 15,000 metre drill program to increase gold resources. 2011-2012: 1931 m of diamond drilling, prospecting, geochemical and geological surveys. Obtained the Golden Lake option which is contiguous to the west. Purchased Goldeye’s Tyrrell properties. 2013: 1 drill hole tested the 826 Zone with 4 intersections with values over 750 ppb Au. Surface samples were collected over a strike length of 1500 m with the highest returning 3.33 g.t Au. Between 2012 and 2013 38 infill and step-out diamond drill holes, totaling 12,283 m were completed. The 2014 resource estimate includes the Golden Lake Extension to the Juby Main Zone.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| CO-3688 | 20000007158 | 20000007158 |
| CO-3698 | 20000008218 | 20000008218 |
| 2.1076, CO-2154 | 41P10SW0021 | 41P10SW0021 |
| 2.1734 | 41P10SW0016 | 41P10SW0016 |
| 2.1558 | 41P10SW0018 | 41P10SW0018 |
| 16 | 41P10SW0026 | 41P10SW0026 |
| 17 | 41P11NE0725 | 41P11NE0725 |
| W9680.00459 | 41P10SW0006 | 41P10SW0006 |
| 2.18748 | 41P10SW2001 | 41P10SW2001 |
| 2.18771 | 41P10SW2002 | 41P10SW2002 |
| 2.20338, CO-2677 | 41P10SW2008 | 41P10SW2008 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Kidd-Munro
Geological Age: Archean
Nov 21, 2013 (D Guidon) - From Campbell, Sexton and Studd (2013) The property occurs within the Shining Tree area, a region of Archean volcanic and sedimentary rocks that occurs south of the main part of the Abitibi greenstone belt. Volcano-sedimentary rocks of the Shining Tree area are intruded in the northwest by the Kenogamissi Batholith, intruded to the southwest by the Ramsey-Algoma granitoid complex, and are unconformably overlain to the east by sediments of the Huronian Supergroup. Recent geochronological work has enabled the Archean stratigraphy of the Shining Tree area to be correlated with that of the rest of the Abitibi greenstone belt. In the area, Archean volcanic rocks consist of tholeiitic mafic’s, komatiitic ultramfic’s and calc-alkaline intermediate’s to felsic’s. These volcanic rocks are part of the 2720-2710 Ma Kidd-Munro assemblage. The Indian Lake Group sediments were considered to belong to the Timiskaming assemblage as these sandstones and conglomerate rocks were similar in appearance to the Timiskaming assemblage rocks in the Timmins and Kirkland Lake areas. However, recent age dating of the Indian Lake Group sedimentary rocks on the property and in the Shining tree area has returned age determinations of 2690-2680 Ma which means that these rocks are at least 10 million years older than the 2676-2670 Ma Timiskaming assemblage rocks of the Timmins and Kirkland Lake areas. Therefore, the Indian Lake Group is most similar to the 2690-2680 Ma Porcupine assemblage. In addition, the Ridout – Tyrrell Deformation Zone has been interpreted to extend through the Shining Tree area (Ayer, et.al, 2013).
| Rock Type | Rank | Composition | Texture | Relationship | Conglomerate | 1 | Adjacent |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 1 | Tholeiitic | Near | |
| Claystone | 2 | Adjacent | ||
| Ultramafic lava flow-unsubdivided | 4 | Spinifex | Near | |
| Gabbroid-Unsubdivided | 5 | Diabase - Matachewan Dikes | Near | |
| Vein | 6 | Quartz-Ankerite-Pyrite | Is |
Nov 21, 2013 (D Guidon) - From Campbell, Sexton and Studd (2013) Brittle and brittle-ductile deformation characterizes all the gold mineralized zones. The TSZ separates steeply dipping, unaltered sediments of the Porcupine assemblage in the southern part of the property from altered (bleached, albitized) Porcupine sediments and older mafic to ultramafic volcanics to the north. The Porcupine sediments consist of argillites, arenites and conglomerates, the latter with minor amounts of jasperoid clasts. The mafic to ultramafic volcanics consist of variably altered flows, interflow sediments, flow top breccias and locally well preserved spinifex textures. Matachewan diabase dykes intrude all the above rock types. Proterozoic sediments of the Gowganda Formation and Nipissing Diabase sills unconformably overlie all rock types on the eastern edge of Tyrrell Township.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 4 | Quartz | Economic And Alteration | Gangue | Hydrothermal | 1 | Strong | Veins |
| 15 | Pyrite | Economic And Alteration | Gangue | Hydrothermal | 2 | Strong | Veins |
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Gold | Economic | Ore | ||||
| Ankerite | Alteration | Hydrothermal | 2 | Strong | Veins |
Aug 22, 2014 (D Guidon) - From Campbell, Sexton and Studd (2013) Mineralization on the Juby Gold property occurs predominantly along the Tyrrell Structural Zone (TSZ), which strikes at 105 to 115 degrees and has steep north to vertical dips in the area of the Juby Main Zone. The structural attitude of the TSZ changes in the Golden Lake area with a strike of 130 to 140 degrees and moderate to steep south dips. This change in structural attitude continues for another 5 kilometers and extends through the Big Dome and Hydro Creek-Lacarte. Gold mineralization in the Juby Main and Golden Lake Zones occurs dominantly within the moderate to intense alteration. Within the alteration, mineralization is typically proximal to the quartz-ankerite-pyrite veins and the quartz-chalcopyrite veins. Gold mineralization is very fine-grained and typically is not visible in hand sample. Gold grade is broadly correlative with intensity of alteration and sulphide (pyrite) content. The better grade sections are characterized by zones of multiple, narrow quartz-carbonate-pyrite veins and/or brecciation of the host rock. These sections are narrow (ie. <5 metres) in the Juby Main Zone and wide (ie. 5-10 metres) in the Golden Lake Zone. The trend of the Juby Main Zone is 285 degrees and has a strike length of about 2.5 km. The Golden Lake Zone, to the west, has a 315 degree trend and a strike length of about 1 km. It is open to the northwest and both zones are open to depth. (Campbell, Sexton, Studd 2014)
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Juby | 2013 | Indicated Mineral Resource | 25300000 | Campbell, Sexton and Studd (2013) | Gold 1.28 g/t | |
| Juby | 2013 | Inferred Mineral Resource | 74200000 | Campbell, Sexton and Studd (2013) | Gold 0.91 g/t |
File - Resident Geologist files CO-2172, CO-2205
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Map - Macmurchy and Tyrrell townships, Sudbury and Timiskaming districts
Publication Number: M2365 Scale: 1:31,680 Date: 1977
Author: Carter M.W.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of Macmurchy and Tyrrell townships, districts of Sudbury and Timiskaming
Publication Number: R152 Page: 36 Date: 1977
Author: Carter M.W.
Publisher Name: Ontario Division of Mines
Location:
Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario
Publication Number: MDC018 Page: 185 Date: 1979
Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.
Publisher Name: Ontario Geological Survey
Location:
Book - Technical report on the revised resources estimate on the Juby mesothermal gold project, Tyrrell Township, Shining Tree area, Ontario
Publication Number: Date: 2010
Author: Armitage, A and Campbell, J.
Publisher Name: Vector Management Inc. for Temex Resources Corp.
Location: SEDAR
Map - Geological Compilation of the Central Abitibi Greenstone Belt: Kapuskasing Structural Zone to the Quebec Border
Publication Number: P3565 Scale: 1:250,000 Date: 2005
Author: Ayer J.A., Berger B.R., Hall L.A.F., Houlé M.G., Johns G.W., Josey S.D., Madon Z.B., Rainsford D.R.B., Trowell N.F., Vaillancourt C.
Publisher Name: Ontario Geological Survey
Location:
Book - Technical report on the updated resource estimate for the Juby Gold Project, Tyrrell Township, Shining Tree area, Ontario
Publication Number: Date: 2013
Author: Campbell, J. Sexton, A. and Studd, D.
Publisher Name: GeoVector Management Inc. for Temex Resources Corp.
Location: SEDAR
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